LockablePivot adds a special mode to the Pivot control where only the current item is shown (often used with multiple selection).

LockablePivot为Pivot控件添加了一种特殊的模式，使之只显示当前项(通常用于多项选择)。

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This paper introduces the parameter selection, installation, grounding mode of low-voltage power grid and construction method of residual current operated protective device.

文中详细论述了剩余电流动作保护装置的参数选用，安装要求，低压电网接地方式及安装施工要求等。

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